Manuel Marengo is a professional Peruvian footballer who plays as a defender. Marengo began his playing career at the youth academy of Deportivo Zuniga. He was noticed by the scouts at Alianza Lima and was called into their club, in 1994.
Marengo was at Alianza Lima for three seasons and after warming the bench for the first year, and most of the second year, he went out onto the pitch for Lima. Marengo ended his association with Alianza Lima in 1996, with 47 games and 3 goals to his name. Marengo moved to Sporting Cristal, in 1997, and started another endeavour to get into the first team.
From 1997 to 2002, Marengo was a part of Sporting Cristal and played 83 games for the club, again scoring three times during the tenure. In 2002, he moved on to Alianza Atletico and played 19 games through the season. Struggling with an injury, Marengo decided to move to Coronel Bolognesi in order to change his form.
He played 26 games that season before moving back to Alianza Atletico in 2004. Over the next season, Marengo was indispensible at Alianza Atletico Sullana, playing 23 games and scoring once. That prompted Coronel to re-sign him for two seasons, during which Marengo showed what he was capable of. 73 games that fetched 4 goals firmly placed Marengo as one of the first names on the starting eleven.
In 2007, Sport Boys decided to bring Marengo into their lineup, with the player obliging with 3 goals from 28 stellar performances. In 2008, Marengo moved to Cienciano for one season, grabbing 43 caps and scoring 3 goals for the team.
In 2009, Juan Aurich decided to bring some stability in their defense with the experienced Marengo in their lineup.
At the international level, Marengo played for the Peruvian national team between 1996 and 2003. He earned 13 caps during that tenure.